JPS54122214A - Preparation of paraformaldehyde - Google Patents
Preparation of paraformaldehydeInfo
- Publication number
- JPS54122214A JPS54122214A JP2890278A JP2890278A JPS54122214A JP S54122214 A JPS54122214 A JP S54122214A JP 2890278 A JP2890278 A JP 2890278A JP 2890278 A JP2890278 A JP 2890278A JP S54122214 A JPS54122214 A JP S54122214A
- Authority
- JP
- Japan
- Prior art keywords
- paraformaldehyde
- stabilizer
- molded
- adsorption
- rate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To obtain the high quality title compound having no tackiness, high fluidity, high solubility and improved handleability, by mixing a stabilizer as vapor in air or in an inert gas, and letting the stabilizer to contact with molded paraformaldehyde, thereby increasing the rate of adsorption of the stabilizer in the paraformaldehyde.
CONSTITUTION: An aqueous solution of dilute formaldehyde is concentrated and then solidified by cooling in a molding machine to give a molded paraformaldehyde. A stabilizer, e.g. ammonia, a lower aliphatic amine etc., is vaporized and mixed to air or an inert gas, and the molded paraformaldehyde is treated with the diluted stabilizer.
EFFECT: The concentration of the stabilizer in the gas is low, because its rate of adsorption to molded paraformaldehyde is extremely high. Thus the molded paraformaldehyde is prevented from getting non-uniform in quality and getting wet. The time for the treatment can be shortened, and the stability of the product is high.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2890278A JPS54122214A (en) | 1978-03-14 | 1978-03-14 | Preparation of paraformaldehyde |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2890278A JPS54122214A (en) | 1978-03-14 | 1978-03-14 | Preparation of paraformaldehyde |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54122214A true JPS54122214A (en) | 1979-09-21 |
JPS5623412B2 JPS5623412B2 (en) | 1981-05-30 |
Family
ID=12261330
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2890278A Granted JPS54122214A (en) | 1978-03-14 | 1978-03-14 | Preparation of paraformaldehyde |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54122214A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997034941A1 (en) * | 1996-03-20 | 1997-09-25 | Hoechst Celanese Corporation | Addition of amine to improve paraformaldehyde |
US7604462B2 (en) | 2005-01-19 | 2009-10-20 | Denso Corporation | High pressure pump having plunger |
US8176024B2 (en) | 2005-08-30 | 2012-05-08 | Konica Minolta Business Technologies, Inc. | Information apparatus connected to information terminal having a plurality of applications installed thereinto, control method of the same, and program product |
CN112714773A (en) * | 2018-09-28 | 2021-04-27 | 国际人造丝公司 | Ammonia and ammonium hydroxide stabilizers for paraformaldehyde |
-
1978
- 1978-03-14 JP JP2890278A patent/JPS54122214A/en active Granted
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997034941A1 (en) * | 1996-03-20 | 1997-09-25 | Hoechst Celanese Corporation | Addition of amine to improve paraformaldehyde |
US7604462B2 (en) | 2005-01-19 | 2009-10-20 | Denso Corporation | High pressure pump having plunger |
US7635257B2 (en) | 2005-01-19 | 2009-12-22 | Denso Corporation | High pressure pump having plunger |
US8052404B2 (en) | 2005-01-19 | 2011-11-08 | Denso Corporation | High pressure pump having plunger |
US8052405B2 (en) | 2005-01-19 | 2011-11-08 | Denso Corporation | High pressure pump having plunger |
US8176024B2 (en) | 2005-08-30 | 2012-05-08 | Konica Minolta Business Technologies, Inc. | Information apparatus connected to information terminal having a plurality of applications installed thereinto, control method of the same, and program product |
CN112714773A (en) * | 2018-09-28 | 2021-04-27 | 国际人造丝公司 | Ammonia and ammonium hydroxide stabilizers for paraformaldehyde |
US20220033559A1 (en) * | 2018-09-28 | 2022-02-03 | Celanese International Corporation | Ammonia and ammonium hydroxide stabilizers for paraformaldehyde |
US11897996B2 (en) * | 2018-09-28 | 2024-02-13 | Celanese International Corporation | Ammonia and ammonium hydroxide stabilizers for paraformaldehyde |
Also Published As
Publication number | Publication date |
---|---|
JPS5623412B2 (en) | 1981-05-30 |
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